ab61b2c9f1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@187906 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <complex>
|
|
|
|
// template<Arithmetic T>
|
|
// T
|
|
// real(const T& x);
|
|
|
|
#include <complex>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
#include "../cases.h"
|
|
|
|
template <class T, int x>
|
|
void
|
|
test(typename std::enable_if<std::is_integral<T>::value>::type* = 0)
|
|
{
|
|
static_assert((std::is_same<decltype(std::real(T(x))), double>::value), "");
|
|
assert(std::real(x) == x);
|
|
#if _LIBCPP_STD_VER > 11
|
|
constexpr T val {x};
|
|
static_assert(std::real(val) == val, "");
|
|
constexpr std::complex<T> t{val, val};
|
|
static_assert(t.real() == x, "" );
|
|
#endif
|
|
}
|
|
|
|
template <class T, int x>
|
|
void
|
|
test(typename std::enable_if<!std::is_integral<T>::value>::type* = 0)
|
|
{
|
|
static_assert((std::is_same<decltype(std::real(T(x))), T>::value), "");
|
|
assert(std::real(x) == x);
|
|
#if _LIBCPP_STD_VER > 11
|
|
constexpr T val {x};
|
|
static_assert(std::real(val) == val, "");
|
|
constexpr std::complex<T> t{val, val};
|
|
static_assert(t.real() == x, "" );
|
|
#endif
|
|
}
|
|
|
|
template <class T>
|
|
void
|
|
test()
|
|
{
|
|
test<T, 0>();
|
|
test<T, 1>();
|
|
test<T, 10>();
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test<float>();
|
|
test<double>();
|
|
test<long double>();
|
|
test<int>();
|
|
test<unsigned>();
|
|
test<long long>();
|
|
}
|